A process for preparing a nitrated compound, including the step of reacting a compound (A) including at least one substituted or unsubstituted aromatic or heteroaromatic ring, wherein the heteroaromatic ring includes at least one heteroatom selected from the group consisting of oxygen, sulfur, phosphor, selenium and nitrogen, with a compound of formula (I)

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wherein Y is selected from the group consisting of hydrogen and nitro.

The present invention discloses multi-arm monomolecular white light-emitting materials, preparation method and application thereof. Benzene ring is used as a core, and penta-substituted pyrene and an electron-withdrawing group or an group electron-donating group Ar are used as arms to prepare the multi-arm monomolecular white light-emitting materials; wherein Ar is one of the electron-withdrawing groups such as nitro, cyano, tertiary amine cation, trifluoromethyl, trichloromethyl, sulfonic acid group, formyl, acyl, carboxyl, methoxy, pyridyl, diphenyl sulfone, triazinyl and anthracenedione; or one of the electron-donating groups such as pyrenyl, 9-carbazolyl, 2-thienyl, diphenylamino, tert-butyl diphenylamino, 9-phenoxazinyl, acridinyl, spiro-bifluorenyl, spirofluorenyl acridinyl, alkylamino, dialkylamino, amino and hydroxyl. The present invention simply combines a synthesis method to prepare multi-arm monomolecular white light-emitting materials with novel structure, high fluorescence quantum efficiency, excellent spectrum stability and electroluminescence performance and high color purity, and achieves the preparation of a highly efficient and spectrally stable electroluminescent devices with high color rendering index.

The present invention discloses multi-arm monomolecular white light-emitting materials, preparation method and application thereof. Benzene ring is used as a core, and penta-substituted pyrene and an electron-withdrawing group or an group electron-donating group Ar are used as arms to prepare the multi-arm monomolecular white light-emitting materials; wherein Ar is one of the electron-withdrawing groups such as nitro, cyano, tertiary amine cation, trifluoromethyl, trichloromethyl, sulfonic acid group, formyl, acyl, carboxyl, methoxy, pyridyl, diphenyl sulfone, triazinyl and anthracenedione; or one of the electron-donating groups such as pyrenyl, 9-carbazolyl, 2-thienyl, diphenylamino, tert-butyl diphenylamino, 9-phenoxazinyl, acridinyl, spiro-bifluorenyl, spirofluorenyl acridinyl, alkylamino, dialkylamino, amino and hydroxyl. The present invention simply combines a synthesis method to prepare multi-arm monomolecular white light-emitting materials with novel structure, high fluorescence quantum efficiency, excellent spectrum stability and electroluminescence performance and high color purity, and achieves the preparation of a highly efficient and spectrally stable electroluminescent devices with high color rendering index.

The present invention refers to a process for a transition metal, particularly nickel-catalyzed cyanation reaction of aryl/vinyl halide using organic nitrile compounds. This new reaction provides a strategically distinct approach to the safe preparation of aryl/vinyl cyanides, which are essential compounds in agrochemistry and medicinal chemistry.

The present invention refers to a process for a transition metal, particularly nickel-catalyzed cyanation reaction of aryl/vinyl halide using organic nitrile compounds. This new reaction provides a strategically distinct approach to the safe preparation of aryl/vinyl cyanides, which are essential compounds in agrochemistry and medicinal chemistry.

The present invention relates to compounds suitable for use in electronic devices, and to electronic devices, especially organic electroluminescent devices, comprising these compounds.

The present invention relates to compounds suitable for use in electronic devices, and to electronic devices, especially organic electroluminescent devices, comprising these compounds.

The present disclosure provides certain tetrahydro-1H-cyclopenta[cd]indene compounds that are Hypoxia Inducible Factor 2α (HIF-2α) inhibitors and are therefore useful for the treatment of diseases treatable by inhibition of HIF-2α. Also provided are pharmaceutical compositions containing such compounds and processes for preparing such compounds.

The invention relates to a use of a fluorination gas, and the elemental fluorine (F.sub.2) is present in a high concentration, for example, in a concentration of elemental fluorine (F.sub.2), especially of equal to much higher than 15 or even 20% by volume, and to a process for the manufacture of a fluorinated compound by direct fluorination employing a fluorination gas, wherein the elemental fluorine (F.sub.2) is present in a high concentration. The process of the invention is directed to the manufacture of a fluorinated compound, for the exception of fluorinated benzene, by direct fluorination. Especially the invention is of interest in the preparation of fluorinated organic compounds, final products and as well intermediates, for usage in agro-, pharma-, electronics-, catalyst, solvent and other functional chemical applications. The fluorination process of the invention may be performed batch-wise or in a continuous manner.

The invention relates to a use of a fluorination gas, and the elemental fluorine (F.sub.2) is present in a high concentration, for example, in a concentration of elemental fluorine (F.sub.2), especially of equal to much higher than 15 or even 20% by volume, and to a process for the manufacture of a fluorinated compound by direct fluorination employing a fluorination gas, wherein the elemental fluorine (F.sub.2) is present in a high concentration. The process of the invention is directed to the manufacture of a fluorinated compound, for the exception of fluorinated benzene, by direct fluorination. Especially the invention is of interest in the preparation of fluorinated organic compounds, final products and as well intermediates, for usage in agro-, pharma-, electronics-, catalyst, solvent and other functional chemical applications. The fluorination process of the invention may be performed batch-wise or in a continuous manner.